Lubricating system for milling-machine saddles.



J. GOETZ, W.. K. B LUBRIGATING SYSTEM l al,

rAP'PLICATION FILED 00T.16, 1913.

UXBAUM & F. A. PARSONS. PoR MILLING MACHINI.1 SADDLBS.

Patented Feb. 17, 1914.

'ly\\ il v my' l J.-GOETZ, W. K. BUXBAUM & I. A. PRSONS.

sADDLEs.

2 SHEETS-SHEET 2.

Patented Feb.17,191'4.

APPLICATION FILED ocmw, 1913."

, WHW. Il.) l. ll I ...F.IIVNHIHWU! l! LUBRIGATING SYSTEM FOR MILLING MACHINE Il Hill I I u m. ,W w. .N

w N m M %M ZWM 'To all whom-it may concern: 4

I UMTED" sTArEsrATENT onirica. 'JOHN Gonrhz, 0E wEsT ALMS, AND-winning K. BUXBAUM REDA. rARsoNsioE-- 1 .j A MILWAUKEE. wisconsin.

-Luisiercilirrrlve SYSTEM Fon MILLING-MACHINE snm-inns.

Be it known that we,JoHN'GoET-z,fa

citizen/of theUnited States, and resident of West Allis, in the county of Milwaukee and' State. of Wisconsin, and WILLIAM K. BUx'- BAUM and FRED A. PAizsoNsfcit-izensfof the United States, and residents of Milwaukee,

in vthe county of Milwaukee and Statealf Wisconsin, have invented new and useful Improvements' in vLubricating' Systems for Milling-Machine Saddles, of which the following is a description, reference being had tothe accompanying drawings, which are a part nf-this specification.

lThis invention has. fori/ts object tot pro vide a force feed lubricating systemV withreturn iow for lubricating' the various bearings of a milling machine saddle' without interfering with the movements ofthe sad'- dle or other parts.

' Another object'of the invention'is to provide such a force feed lubricating system for milling machine saddles .with al reservoir for storing a supply of lubricant in lthe saddle. for lubricating the bearings of the saddle on the `knee at the beginning of the` operation of the machine after the machine has been` standing idle and before the oil reaches these parts on starting the circulation, such reservoir ,being incapable of being drained by siphon action of the lubricating system,"y

With-@the above and other objects in view the invention consists in the lubricating means as herein claimed and all equivalents. .Referrin to the accompanying drawings in which like charactersof reference indicate the same parts in different views:- Figure 1 is a sectional elevation of the knee 'of a milling machine with itsassociated parts having the lubricating system of this invention incorporated therein; Figi 2"'is a sectional elevation on a plane at right angies to the sectional lowing line 2--2 o Fig.'1; Fig. 3 is a sectional view bein in the same direction as in Fig. 2 but on t e plane of line 3 3 of Fig. 1;' Fig. 4 is a sectional view loking in the direction of Fig. 1 and taken beyond the endof the feed nut which is sectioned in Fig.N 1; and Fig. 5 is aseetional ,plan

connection-of the knee Figs. 6 and 7 are' fragview of the "sli in on the frame.

'mentary views showing details ofl construction.

l Specification of Letters Patent. Application led October 16, 1913. Serial No..795,4'12." J

Patented'reuiv, 1914.

' In these drawings l0 indicatesa frame or' casing on which a knee member 11 is mount edte slide vertically in the usual manner andas. shown in Fig. `5. This'kneemem-` ber` 11 has its upperedges dovetailed into a saddle member l2 whichwis therebyy made slidable on the 'knee member toward and from the casing 10 and has a table 13 dovetailed into its upper surface to be slidable *I thereon at right angles to the `line` of movement vof the saddleoni the knee, all as 'in the` common construction of milling machines.

The saddle member 12 has keyed within it astationary nut 14 through which threads the'feed screw 15 of the ,table` in theiusual manner andwithin thesame opening of the saddle there is loosely mounted aSsleeve 16 ,being provided with a beveled pinion 17 lat itsrend meshing with a corresponding bevi shaft 19 for that purpose.

Our 'invention is designed to provide a How of lubricant to these various moving parts of the saddle, including' the'bearings of the saddle on the knee.

. A suitable source of lubrieant supply under pressure, which yis not shown,`delivers a flow of lubricant through a supply pipe 2 0 to the bearing' for the knee on the frame 10' and the .knee bearing has a .longitudinal groove 21 registeringv with the end of the supply pipe andcommunieating with a feed pipe 22 so that communication between the supply-pipe 2O and the feed pipe 22 is main- .eld lpinion 18 on a suitably'driven vertical' tained in all adjustments of the knee. The feed pipeI 22 extends to the upper bearing surface of the knee .whereit registers withl a groove 23 in the bottom of the saddle 12.

ing to the fact'` that th'exkeyway in the feed screw 15 comes into register with the oil feeding opening 26 at each revolution thereof 'there' is a surplus of oil fed through these parts and the top of the saddle 12 is hollo ed out to form a receptacle into which the oil drains. The portion of the saddle in which the stationary. nut 14 and the sleeve 16 are contained stands as a partition between the oil receptacle or drip pan at the two ends of the saddle 12, but a passageway 27 is formedtherethrough and the oil falling into the lefthand end of the saddle, as shown in` Figs. 2 and 6,' drains through the passageway-27 `into a well 28 at the other end of the saddle, part ofvthe oilpassing through an opening leadinv to the-bearing of shaft 19. From the well 28 the oil passes through an opening 29 to the interior of a gear casingl 30 which is usually carried by the saddle and it is held within this casing until it reaches the level of a spout 31. This level is sufficient to reach the bear- A ings of shafts 32 which are journaled in the from which it was originally pumped through an opening 37 leading from the bot-- `tom of the chamber 36 to a vertical groove 38 in the bearing surface of the knee and through one of a number of openings 39 of the casingi() at different elevations regis--` tering with such groove.

vBesides the circuit of travel of the lubri cant which is returned to the casing as just described the invention provides for another flow of lubricant to the slide bearings of the saddle. For this purpose a passageway 40 extends upwardly from the groove 23 in the bottom of the saddle, this being the groove which as before described receives Qil under pressure from the oil feed pipe 22,

and the passageway 40 'entersa recess41in' the top of the saddle Lwhich is positioned alongside of and empties into a reservoir or trough 42. .The trough 42 'extends lengthwise of the saddle, or lparallel with the feed screw 15 .and has passageways 43 leading from itJ to the slide-bearings of the saddle,

'but the surplus oil may overow therefrom through anotch 44 in its sidewall into the well 28 from which it is drained through .the opening 29 as before described. The passageways -43 communicate with grooves 45 on the bearing surface of the| knee and inclined passragewayse-v through the bearing anges of the knee conve lubricant from the roove 45 to' grooves 4 in the undercut bearing surface of the saddle so that the oil contained in the reservoir Aor trough 42`may freely flow to the bearing surfaces of the saddle on the knee 'and is thus capable of lubricating these bearin surfaces at all times, even when the lubricating system has knee are furnished withlubricant.

had the oil drained therefrom by themachine remaining idle for some length of time. g

In operationthe supply of lubricant under pressure is delivered from the lubricantsupply pipe 20 to the feed pipe 22 in all of the vertical adjustments of the knee and is conveyed to the transverse groove 23 in the bottom of the saddle which not only supplies the interior of the stationaryfeed nut 14 and the bearing of the .driving .sleeve 16, but through the passageway 40 it vserves to supply lubricantto the trough or lreservoir 42 from which the bearings of the saddle on rltple e overflow of oilfrom the nut, the sleeve and the reservoir is caught by the well 28 from which it passes through the opening 29 into v the' gear casing 30 where it serves to llubri- .cate parts therein and is then discharged through the spout ai and simio-ttes of the main chamber of the knee and through the y registering openings 37 and 39 to the casing of the milling machine from which it was originally drawn. Theworking parts of the saddle are thus copiously supplied with lubricant at all times while the machine remains in operation, and the bearings of the saddle on the knee are lubricated from the reservoir well 42 in such a manner that their supply cannot be siphoned back into the milling machine casing whenthe machine is at rest, and they are therefore ready for ,duty immediately upon the starting of the machine.

What we claim as new and desire to secure by Letters Patent is:

1. In a saddle lubricating system for milling machines, the combination with a milling machine,` of a .lubricant supply pipe .leading to the knee bearing of. the frame,

and a feed pipe in the knee having communication with the lubricant supply pipe-and terminating at thesaddle bearing on the knee, there being a groove in the bearing surface of the saddle on the knee with which the feed pipe registers in the different positions of the saddle said groove having passageways leading rom it to the interior of the feed nut and to the bearing of the driving sleeve for the feed screw;

2. In a saddle lubricating system forimilli ing machines, the combination with a' milling machine, of a lubricant supply pipe .terminating at the knee bearing of the casing, there being a groove in the bearing of the knee registering with the lubricant supply pipe in diderent positions of the1 knee, a feed pipe in the knee communicating with the. said groove and terminating in the saddle bearing on the knee, therebeing a groove in the bearin surface of the .saddle registering `with t e feed pipe in different polsitions of the saddle, the last mentioned groove having passagewaysY leading fromit to the interior of the stationary"4 nutl of the feed screw and to the bearing for the driving sleeve splined on the feed screw, a reservoir formed in the saddle and having a passagevvay leading to the upper part thereof from the said last mentioned roove, a .well in the saddle receiving ove ow lubricant from the reservoir and from the stationary' nut and the driving sleeve, there being passageways leading from the reservoir to the 'bearings `of the saddle on the knee, and means for return' the lubricant from the well to the casing o -the milling machine.

3.' I n a saddle lubricating system for 'milling machines, the combination with a mill'- ing machine, of a lubricant supply pipe terminating'at the knee bearing of the casing,

there being a groove in the bearing of the knee registering with the lubricant 'supplyI pipe in diiferent positions of the knee, a

l feed pipe in theJmeecOmmuniCatingwith the said groove and terminating 1n the saddle bearing on the knee, there bein a groove in the bearing surface of the sa dle pipe in different positions of the knee, a feed pipe in the knee communicating with the ing with the feed pipe in diiferent positions.

said groove and terminating in thesaddle bearlng on 'the knee, there being a groove in the bearing surface of the saddle registerof the saddle, theqast mentioned groove having passageways leading from it to theinterior of the stationary nut of the feed screw and to the bearing for the `driving sleeve splined on the feed screw, a reservoirformed in the'saddle and havin a passageway leading to the upper part t ereof from the said last mentioned groove, a well in the 4saddle -receiving overflow lubricant from the-reser- 'voir and from Athe stationary nut and the drivingv sleeve; there being passageways leading from the' reservoir t9 the bearings of the saddle on the knee, means'for returning the lubricant from the well to the casing of the milling machine, a passageway leading from the Well `to the gear casing of the saddle, and a spout leading from the gear ings therein and projecting through a slot inl the knee, to discharge lubricant into the chamber within the knee, there being an opening thrbughthe knee leading from said chamber and a groove in the bearing surface )of the' knee registering with said openin and there being a series of openings throug the casing of the milling machine registering with said groove for returning oil from the chamber of the'knee to the casing ofV the milling machine.

5. In a saddle lubricating system for mill- Y Acasing of the saddle at the level of the bearing'machines, the combination with a milling machine,of a lubricant supply pipe terminating at the knee bearmg of the casing,

there being a groove in the bearing of the `l knee registering with the lubricant supply pipe in dierent positions of the knee, al feed y pipe in the knee communicating with the said groove and terminating in the Saddle -bearing' on the knee, there lbeing a groove in the bearing surface of the saddle registering with the feed pipe indifferent posltions'of the saddle, the last mentioned groove having passagewaysleading from it to the interior of the stationarynut of the feed screw and to the bearing for the driving sleeve 'splined on the feed screwr a well in the saddle receiving overflow lubricant from the driving sleeve, the top of the saddle forming a drip receptacle to collect the surplus oil fed to the nut, lthere being an opening through the saddle from the drip receptacle to 'thevwelh 'and means for returning the lubricant from Athe Well to dthe casing of the milling machine. In testimony whereof, we aix our signatures, in presence of two witnesses. JOHN GOETZ.

a WILLIAM K. BUXBAUM. 1 FRED A. PARSONS.

- Witnesses:

R. S. C. CALDWELL,

KATHERINE Hour. 

